Postage meter machine



July 19, 1938s W. H. WHEELER, JR., ET AL POSTAGE METER MACHINE lllllllllllllllllllll IlllIlllllllllIIIIIllllllllllllllllllllllllllllllllllllllll July 19, 1938. w. H. WHEELER. JR., ET A1. 2,124,333

POSTAGE METER MACHINE Filed Sept. 26, 1953 7 sheets-sheet 2 July m, 1938. w. H. WHEELER. JE., ET A1. 2,124,383

POSTAGE METER MACHINE Filed Sept. 26, 1953 '7 Sheets-Sheet 3 209x f/g.

JUY T19, @938 w. H. WHEELER, JR., ET A1. 2,124,383

POSTAGE METER MACHINE Filed gft. 26, 1935 7-Sheets-Sheet 4 July 19, 1938. w. H. WHEELER, JR, ET AL 2,124,383

POSTAGE METER MACHINE Filed Sept. 26, 1933 7 Sheets-Sheet 5 u m b m b1 5@ e Ya. w. m 2 m n 0 .m W M= .Y a a a i w Oooa wm 2 @ww w E .E EE m\ E E u E. w \Z z :E u /do UWM I U/(--a70- @M mw 2 i,w Z w SHV l l@ July 19, 1938. w. H. WHEELER, JR., ET AL 2,124,383

POSTAGE METER MACHINE 7 Sheets-Sheet 6 Filed Sept. 26, 1955 July 19, 1938. w. H, WHEELER, JR., ET AL 2,124,383

POSTAGE METER MACHINE Filed Sept. 26, 1953 7 Sheets-Sheet 7 5m w E Patented July 19, 1938 PATENT ori-ica POSTAGE METER MACHINE Walter Il. Wheeler, Jr., and Jacob W. Ogden, Stamford, Conn., assignors to vPitney-Bowes Postage Meter Co., Stamford, Conn., a corporation of Delaware Application September 26, 1933, Serial No. 691,068

11 Claims.

This invention is an improvement in postage meter machines of the type shown in our Patent No. 1,874,073, dated August 30, 1932 and its principal objects are to provide a simple machine of the nature capable of printing a much wider range of selected stamp denominations or values and also to provide novel means for registering the values of the stamps printed by the machine. The novel machine has mans for printing any .of a plurality of denominations, and means for registering the denominations printed, and two actuating mechanisms for the tens wheel of the register,one operated by the units wheel, and the other operated by a direct means independent of the units wheel device.

l Another object is to provide a register and an adjustable variable register actuating means, and means whereby said actuating means may be set to drive either the units wheel of the register, or the tens wheel of the register in `accordance with the denomination or value to be n registered.

Another object is to provide a register or" the character described having a tens wheel operable selectively by the units wheel or by independent means, and means whereby after each operation of the tens wheel the respective actuating mechanism is slightly advanced beyond the necessary extent of advancing movement. A further object is to provide means for retarding the tens wheel actuating mechanism when so advanced beyond the normal extent.

A further object is to provide a machine of the character described with improved stamp selecting devices whereby the machine can be readily adjusted to print stamp values of any desired denomination within the capacity of the machine, and with means whereby at the same time the register operating mechanism is properly shifted so that the value of each stamp printed will be properly'registered.

The accompanying drawings illustrate a machine of the type shown in our aforesaid patent equipped with improvements in accordance with our invention, and we will describe such invention with reference to said drawings to enable others to adapt and use the same; but we do not consider the invention restricted to the type of machines illustrated as various features of theinvention are adapted ior use in other types of printing and registering machines. and therefore we refer to the claims following the description for the essentials of the invention and novel fea tures of construction and novel combinations o parts'ior which protection is desired.

In said drawings:

Fig. 1 is a plan view partly broken away of the complete machine.

Fig. 2 is a detail view or the manually operable driving mechanism thereof.

Fig. 3 is a detail longitudinal section in the plane of the rod 23 showing the parts adjustable by said rod.

Fig. 4 is an enlarged front view of the drum partly in section.

Fig. 4a. is a detail.

Fig. 5 is an enlarged plan view of the adjustable gear segments and register actuating gears.

Fig. 6 is a detail view of the means for advancing and retarding the tens wheel operating mechanisms with part broken away to show the driving pawls in advanced and retarded position.

Fig. 7 is a iront view oi the gear segment shifting device.

Fig. 8 is a detail view showing the cam and connections for shifting the gear segments.

Fig. 8a. is a detail.

Fig. 9 is an enlarged plan view of the registers.

Fig. 10 is a front elevation of Fig. 9.

Fig. 11 is an end view of Fig. 10.

Fig. '12 is a transverse sectional view on the line I2|2, Fig. 14 -of the descending counter showing a tens wheel with the tens driving pawls in a driving position in so'lid lines and in a retracted position in dot and dash lines. Fig. 13 is a sectional view on the line |3-I3, Fig. 14 which is similar to Fig. l2 but shows the units driving pawls in a driving and retracted position.

Fig. 14 is an enlarged sectional view through the tens wheel.

Fig. 15 is a diagrammatic side elevational view looking in the direction of the arrow l5 of Fig. 5 showing the arm 208i in stop position. Fig. 16 is a view similar to Fig. 15 showing the arm in a retard or home position. Fig. 17 is a view similar to Fig. 15 showing the arm in advanced position. Fig. 18 is a view similar to Fig. 15 showing the arm in raised or running position. Fig. 19 is a side elevational view looking in the direction of the arrow I9, Fig. 5, showing the arm 2081i. in stop position. Fig. 20 is a view similar to Fig. 19 showing the arm in advance or home position. Fig. 21 is a view similar to Fig. 1'9 showing the arm in retard position. Fig.' 22 is a view similar to Fig. 19 showing the arm in its raised or running position.

The machine illustrated is in general similar to the machine shown in our aforesaid patent;

into position to stop and comprises a base portion A and a portable unit B detachably mounted thereon. The base carries the envelope sealing mechanism and irnpression roller, and can bemounted on any suitable support. 'Ihe portable unit B contains the printing dies and registering mechanism and can he detached from the base and carried to a. postomce to have the register charged with an amount of prepaid postage. Unit B and base A are provided with mechanisms, 'as described in said patent, which when the unit is properly mounted on the base renders the machine as a whole operative, but will prevent operation thereof, or of the printing mechanism, or register, when the unit B isvseparated from the base.

Pivoted on the base is a frame H2 containing an impression roller and means for moistening the ap of the envelope. The impression roller is driven from the printing drum actuating shaft. When the base and portable unit are properly assembled the impression roller is directly under the printing drum i6 and an envelope passing between them will receive an imprint from a stamp die on the drum.

The printing drum At the front of unit B (Figs. 1-3) is a housing within which is a revolvable drum i6 mounted upon an actuating shaft 6. Said drum carries a post marking die I8, )and stamp die il. Die I8 is engraved with the name of the post olice and provided with adjustable date printing wheels I8a. Die i1 is provided with a revolvable printing wheel lla bearing on 'its rim the various money values or stamp denominations. When the printing drum is turned in a counter clockwise direction the stamp die il willfbe moved past the printing point (i. e. opposite the impression roller) just in advance of the postmark die.

'Ihedrum shaft 6 has one bearing in the front Ic of the casing, and another in a member 6c of a bracket il (see Fig. 3). On the front end of shaft 6 ,within housing 2 is a ange Ga to which the printing drum I6 is attached. 0n the rear end of shaft 6 is a spiral gear 8, a thrust bearing 8a being interposed between said gear 8 and bearing member 4c. Gear 8 meshes with a spiral gear 'l (Figs. 1-3) on a drive shaft 5, which can be revolved by a hand crank 2l; o r other suitable means. Adjacent shaft 5 is a shaft 22a (Figs. 1-3) one end of which normally projects through .wall lb and acts as a stop for crank 2l. Shaft 22a is normally moved outward by a coiled spring 22s interposed between a collar 22h on the rod and the bracket 4, the outward movement of the Yshaft being limited by a stop collar 22e carrying a pin 22d which engages a cam slot 22t in a curved plate 22e fastened to the wall Ib.

On the outer end of shaft 22a is a lever 22 (Figs. 1-2) which can be moved by the thumb of the operators hand when operating crank 2|; and when shaft 22a. is thus turned the pin 22d engaging cam slot 22t will cause the shaft to move inwardly and withdraw out of the path oi crank 2i, which can then be turned; When crank 2l has passed shaft 22a lever 22 is released and shaft 22a is moved outward by spring 22s the crank 2l at the end of the revolution of shaft 5.

In this machine the printing drum is revolved once for every stamp printed in order to bring the dies into contact with the inker to prepare them for printing; and to actuate mechanism which registers the value of the stamp printed.

In operating the machine an envelope is slid,

grasses ap downward, from left to right (Fig. 1) over the frame H2 until its leading end is slightly between the impression roller and drum IE. lIhen lever 22 is pressed with the thumb to move shaft 22a out of the way of crank 2l and the latter is then turned one revolution, being then arrested by the end of shaft 22a which should be released as soon as crank 2l has passed it. This movement of crank 2l causes the printing drum l@ to revolve once; and in so doing the dies will be inked and shortly before they reach the printing point the envelope will be gripped between the drum and revolving roller and, if but one stamp is to be-printed thereon, will be forwarded through and delivered onto the table or any suitable receiver at the right of the machine. During such passage thedies make an imprint on the-face of the envelope, the ap of the envelope is moistened, and in passing between the drum and roller will be caused to adhere to the envelope as described in our; aforesaid patent.

If it is necessary to make two or more stamp impressions on the envelope to place the proper amount of postage thereon, the envelope is stopped immediately after the first imprint has been made thereon, and is held in such position while the printing drum completes its revolution; then the drum is againrevolved and when the stamp die Il again arrives at the printing point the envelope is released and advanced sufficiently to take the second impression; as described in our aforesaid patent. l

The stamp selecting devices A rod 23 extends axially through the shaft 5 and drum I6 and projects through an opening in the cover plate Za of the drum housing (Fig. 3), and has a knob 23a on its front end. 'Ihe rear end of rod 23 is supported in a xed bracket member le and carries a castellated collar 23t which is adapted to engage an opposed castellated flange it on member de. is preferably made detachable for convenience in assembling. A revolvable face cam 26 is mounted on rod 23 between gear 8 and member de and has a sleeve hub 26a mounted in a fixed bracketmember 4d.

The denomination printing wheel lla. (Figs. 1-4) is mounted on a shaft Hb in drum i6, and on the outer end of shaft Hb is fastened a gear llc which meshes with a similar gear ie, having its hub revolvably supported in an axial bore in the drum, rod 23 extending through said hub. Gear iB e has a series of holes isz (one for each denomination engraved on wheel ila) through it, equally spaced around its axis.

A disk 23h is fastened to rod 23 opposite gear 46e and has a series of projecting pins 23e spaced similar to the holes in the gear Hic which they are designed to enter. A spring 23s interposed between the gear IEe and disk 23h normally separates them and also forces the rod 23 to nor-' mally remain in its outermost position and holds the castellated collar 23t in engagement with The member le nomination wheel l'la will also be locked to the drum; and when so locked the drum and wheel i'la may be revolved as a unit but their relative positions can only be altered by moving gear Ile relatively to the drum. The tumbler pins 21 are preferably constructed and arranged to operate substantially as described in our'aforesaid patent.

When the drum is at rest. at the end of a complete revolution, the holes in gear lie will be in alignment with the pins 23e of disk 23h (see Figs. 3, 4, 4a). Then by pushing knob 23a inward the rod 23, disk 23h and stop collar 23t will be moved inward, thereby disengaging collar 23t from flange 4t; and causing pins 23c to enter the holes in gear l0e and displace the tumbler pins 21; and then rod 23 with all parts fastened to it may be revolved. When rod 23 is turned gear I0e will turn the denomination wheel i1. Thus any desired value engraved thereon can be brought to operative position.

' When the desired selection has Vbeen made knob Lso 23a is released and spring 23s will return rod 23 to its normal position, vwithdrawing pins 23e from gear i0e and uncoupling gear lie from the shaft. and pins 21 will lock the gear to the drum and thus lock the denomination wheel l1 in the position to which it was previouslyy adjusted relative to the drum, and sto'p collar 23t will reengage ilange 4t and prevent further turning of rod 23.

The spacing of the pieces on the rod 23 (Fig. 3) is such that the stop collar 23t will not be disengaged from flange It Vuntil the coupling of the gear lie to the shaft is completed, so that the knob 23a cannot be turned without also turning the denomination wheel. The lands and spaces of the castellated stop collar 231,L and flange 4t are such that engagement of the two can only take place at points in the circle corresponding to the points where the holes in gear IGe will register with-the tumbler pins 21. The number of castellations in flange 4t and in collar 23t are equal to the number of values engraved on denomination wheel ila, and the rod 23 may be located in any desired angular position by first pushing the knob 23a,l inward to disengage collar 23t fromv flange It-then turning it to the division desired, and then allowing the collar to re-engage the ange.

The selection of dies can be made only at a time when the drum is in its normal position of rest; and in order to prevent accidental operation of the handle 2i at the time the selection is being made shaft 22a is prevented from moving inward during the die selecting operation by means of a lever 20 (Fig. 3) which is pivoted at 20a. to a member of the bracket. One arm oflever 20 is provided with a pin 25b-which engages a groove in stop collar 23t and the upper arm of lever 2l'is .adapted to engage a collar 22h on shaft 22.. When the rod 23 is pushed inward preparatory to selecting a stamp die the stop collar 23t will rock the lever 20an'd cause its upper arm. to move intothe path of collar 22h and prevent .inward movement-of shaft 22a and the release of the hand crank 2l.J until rod 23 is again moved outward.

The parts of the machine thus far referred to are preferably constructed and arranged to operate substantially as shown and described in our Patent 1,874,073 above referred to and therefore do not 'require further detailed description nor illustration herein.

The registering mechanism In the machine shown two counters or registering mechanisms are employed, one of them registering in ascending order the total of the values of all stamps printed; the other subtract- -ing these values from the amount of prepaid postage for which it was originally set by a post ofilce oillcial. 'I'he means for setting the subtracting counter and for locking the mechanism when this predetermined amount has been exhausted has been described in our prior patents and need no further description here.

Both counters are mounted in a frame having two end walls 200a and 200b with a middle wall 200e between and as the lcounters are of identical design the description of one will explain both.

Each register shown is in general of the well known geared type in which the excess of ten in any denomination wheel is transferred to the wheel of next higher denomination by means of Geneva gears. registers essentially differ from the standard constructions in that both the units wheels, and the tens wheels are independently operated,

so that comparatively high values may be quickly registered without imparting the usual extent of movement to the units wheel.

As shown in Figs. 9 and 10 the units wheel 20| is made fast to a shaft 20|a journaled in the walls 200a and 200e and has a driving gear wheel 2Mb on its outer end. A. second shaft 202e in axiall alignment with shaft 20Ia has one end journaled in wall 200b and has a driving gear 202e fastened on its outer end. The opposite end of said shaft 202e is supported by a'disc 2022:

20|, clearly shown in Fig. l4.

On shaft 20la adjacent the wall 200e is loosely mounted a gear wheel 203, having a cyiindrical projection or hub.203a, and a flange 203D (Fig. 14). On the shaft 202e adjacent the flange 20311 are formed or fixedly secured two similarly spaced anges 2021i. Loosely mounted on the shaft adjacent the outermost of these flanges 20217 is a disc 202x, and attached to or formed integral with this disc is a cylindrical shell 202, the end of which opposite the disc 202:1: has a rotative t on the periphery of the gear 203 as shown in Figs. l0 and 14. The shell 202 has a bearing on the hub of the gear wheel 203. Said 'shell 202 encloses both the flanged portions 202b of the shaft 202e and hub of wheel 203, and is provided with ten internal ratchet teeth 2021,L (Figs. 12', 13 and 14) designed to be engaged by pawls 203c. In the groove between the flange 20319 and the body of the wheel 203 are mounted two spring actuated pawls 203e which are adapted to engage the ratchet teeth 202i of shell 202. Between the flanges 202b of shaft 202a are also mounted two pawls 202e similar to the pawls 203e and also adapted to engage the ratchet teeth 202t of shell 202. The outside of the shell is engraved with the ten digits, and the shell 202 with annulus 202x and gear 203 constitutethe tens wheel of the counter.

'I'he hundred and higher denomination coun-- ter wheels are loosely mounted on the shaft 202a to the left of the tens wheel 202 and ll the space between it and frame 2001.

The Geneva gear wheel 204a; mounted between the unita wheel 20| and 'the gear wheel 203 Serves to drive the tens wheel 202 intermittently (one step at a time) from the units wheel for each revolution ofthe umts wheel. The gear In our invention however the which forms a part of the tens wheel structure wheel 263 transmitting its motion to the shell gilt? through the pawls Edile and ratchet teeth 2921i. Other Geneva gears 285i are mounted between the tens and hundreds wheels, the hundreds and thousands wheel etc. as indicated, so that the register will function correctly in the usual manner when driven from the units side. the transferring operations being carried from one wheel to the next through the Genevas wheels in the well known manner.

When the tens wheel is actuated from the units Wheel the ratchetteeth 292i of the moving tens wheel will ride over the pawls 202e of the then `stationary shaft 202e. On the other hand if the shaft 262e is revolved by gear wheel 202e, the pawls 2Mo will engage ratchet teeth 252i and turn the tens wheels 232, and the ratchet teeth will ride over thepawls 2b30 of gear 223 which will then be stationary like the units wheel. Transferring operations from the tens wheel into the higher orders will be effected, as before, by

the Geneva wheels, but the units wheel will not be aected.

The umts wheels of the adjacent counters are geared together by their intermeshing gear whee 20th; and the shafts 202e of both counters are geared-together by their intermeshing gears 202e, so that both counters will be aiected alike by the operation of the machine.

The selective register actuating mechanism The units wheel gear 2Mb is operated by a gear 205u (Fig. l) and the tens wheel shaft gear- 202e is operated by gear 205i (Fig. 10). The

-denomination of stamp) (Fig. which are nations .engraved on the mounted on a slidable carrier 32a keyed to the main shaft 5 (Fig. 1). Said gear segments are mutilated in accord with the various denomiprinting wheel lila. Each pinion 201i and 201u has ten teeth, and one complete revolution of the sleeve 20611 and 206t will cause its related counter wheel to register ten units: i. e., one revolution of sleeve 206u will cause the counter to register ten on the umts wheel; and one revolution of sleeve 206i will cause the counter to register ten on the tens wheel making a registration of ten in one case and ot one hundred in the other. Consequently the registers will be advanced one, or ten, for each tooth inthe pinions 20m and 201i depending on which of the pinions is actuated by segment gears 32.

The carrier 32a is shiftedV to bring the proper gear segments into position by means of a cam 2t and a' lever 33 (Figs.v 7 and 8). Cam 26 is loosely mounted on rod 23 between bracket members (ic and de (Fig. '1) and has a hubza by which it is supported in member df. Rod 23 has a pin 23d engaging an elongated slot 25d in the hub 26a which permits movement of the rod 23 axially of the cam 26, but causes the cam to turn with the rod.

The lever 33 is pivoted at one end to a stud Bg and carries an anti-friction roller 33h, midway of its length, which engages the slot 26o in the face of cam 26. The lever has a roller 33e on its upper end which engages a groove 32d in the hub of carrier 32a. The cam slot 26o has a progressive series of equally spaced dwells (see Figs. 'Z and 8) each a unit of distance farther escasas from the centergconnected by leads or spiral inclines; whereby if the cam is revolved one revolution the upper end or' leverV 33 will be moved from the starting position to various equi-distant positions, back to the starting position, and the roller 33e will move the carrier 32a so that each segmental gear 32 thereon will in turn occupy a position in which its teeth would mesh with thepinions 26h', or 20N (Fig. 5).

It has been explained above how the relation between the gures on the denomination wheel ila brought to operative position and the angular position of rod 23 is preserved; and as the position oi cam 26 is also governed by the position of rod 23, it follows that the proper operative relation of the wheel ila and the gear seg-f ments 32 for operating the counters will also be maintained; and the' mechanisms for selecting the stamp denomination, from the index on the knob 23a tothe gear segments in harmony and proper relation.

32 are operated As but one ofthe register operating pinions impossible for both of them to be simultaneously engaged by segments 32. To

preserve this spacing a distance piece 28d is secured to rod 28 (Fig. For example, if a small denomination is set up or to be printed, a correspondingly small denomination is to be registered, therefore the carrier 32a will be so shifted that the proper segmental-gear 32 thereon will be brought into position to mesh with the units pinion m and motion would be transmitted from this gear through sleeve 206e and gear` 205u to the gear 2Mb operating the units wheel of the counter as above described, and the pinion 20`|t would not `be engaged nor operated by the gear segments.

If however a stamp of denomination of ten or more is to be printed then the carrier 32a would beshifted so that the proper gear segment 32 "tens pinion 20H andv thereon would be brought into position to mesh with the tens pinionV 201t so-th'at motion would be imparted from the pinion 2ll1t through sleeve 205t and gear 205i to the gear 202e on the shaft 202e operating the tens wheel as above described, so that the register would be operated only through the tens wheel, the units wheel remaining idle at such time because none of the gear segments 32 could mesh with the units'pinlon Overthrow of pawls As the tens wheel 202 is driven only by the pawls 202e or 203e and as the drive may alterin order to obtain the desired result we provide the following mechanism.

Uponone side face of the spur gear 205t` are ten projecting pins 205aequallyspaced in a circle (Figs. 5, 6 and 10). An arm 208i (Fig. 5) is pivotedv at 208a and has a cam shaped end 208173: (Fig. 6) which is caused to enter between two of nate, being say rst from units pinion 20m and A the pins 205m: by the action of a cam 209x, as'shown in Fig. 15 at the time when the last tooth of a. gear segment 32 is leaving engagement with the pinion 201i. The gear 205u actuating the units wheel is also similarly provided with ten pins 20511 and an arm 20811 is pivoted at 20811 and has a" similar cam shaped end which is caused to enter between two of the pins 20511 as shown in Fig. 19, by the action of a cam 209, at the time when the last tooth of a gear segment 32 is leaving engagement with the pinion 20111.

When the machine is at rest none of the gear segments 32 are in engagement with eitherl of the gears 2011?, 20111. The tens drive shaft 206i with its attached'gear 205i cannot revolve because 2081211: of arm 208i is between pins 205cm, having entered between them on the previous operation just as the last tooth of gear segment 32 was leaving gear 2011*., or 20111, if the units side is being driven. Likewise the unit drive shaft 20611 and its attached gear 20511. cannot revolve, because 208m: of arm 20811 is between similar. pins on gear 20511. The entering of the ends of these arms between these pins also prevents the register from overthrowing an extra number.

Facing the tens side of the machine; the gear 205i moves clockwise when driving the register wheels for counting, therefor advance and retract refer to clockwise and anticlockwise motion respectively.

When the machine isl at rest the iiat ends of pawls 202e (Figs. 12, 13) are not seated against the side of the ratchet teeth-or notches 202i, but are withdrawn a slight angular distance up the sides of 202i. This is to lensure that the ends of pawls will ynot beresting on the high points of 202t. As these pawls are shown in the present Figs. 12, 13, their flat ends are resting against 202i. This has been termed neutral position, but the pawls do not stop there.

The cams 209 and 209:0 are fastened to the main shaft 5, and are substantially identical as are the arms 20811. and 208i the only difference being in the shape of the cam faces 208193: (Fig. 6) on their ends. Both arms descend at the same time and engage the pins 20511 and 205m: ontheir respective gears 20511 and 205i whether it has been driving its side of the counter or not.

These arms 208t and 20811 are designed to (1) stop any tendency the gear wheels 205t and 20511 may have to move beyond the point to which they are positively driven, (2) to alternately slightly advance and retract said gears, the advancement of the gears 20511. beingeiected to advance and retract the pawl 203e only when a transfer is effected by the Geneva gear wheel 20411 however, and (3) when withdrawing from. the pins to leave the gears in a slightly retracted position in order to insure an open path for the rst tooth of the gear segments 32 coming into meshwith the pinion 20111 or 201i at the next operation of the machine.

In the case of the arm 208t operating on the tens side of the counter, as shown in Figs. 15-18, the cam end 208bn: is arranged to stop the gear 205t as in Fig.4 15, then retract said gear as in Fig. 16, and here the mechanism is stopped, it being the end of an operation or the home position. 'I'his retracting movement of the gear 205t will cause the pawls 202e to be withdrawn from the full line position of Fig. 12 to the dot and dash line position and will occur on each machine cycle of operation. Thus, when the sleeve 202 is rotated by the pawls 203c, which are associated with vthe units Geneva transfer, in a manner which will be later more fully described, the retractin movement of the pawls 202C will prevent Vtheir r sting on the top of any of' the ratchet teeth 202t, over which pawls the teeth had previously been freelymoving. At the beginning of the next operation the arm 208i continues its descent and advances the gear beyond the rst stopping position or neutral point as in Fig. 17, which will advance the ratchet teeth 202t beyond the pawls 203e as indicated'by the dot and dash line position Fig..13. It then ascends as in Fig. 18, and finally leaves the gear, as stated above, in a slightly retracted position ready for the next engagement of the segmental gear with the pinion.

The action of the arm 20811 operating the units side diiers from the above only in the sequence of the impulses given to the gear 20511. These are given in reverse order, i. e., advance, as in Fig. 20 and retract, as in Fig. 21, instead of retract andadvance, as the gears 2051i and 20511 are moved in opposite directions simultaneously during these impulses. Both gears however are finally left in the same relative position when the arms are withdrawn.

The movement of the arms 20811 and 208t in' approaching the home position during their descent is retarded by means of the cams 209 and 209m to avoid the building up of dangerous momentum in the tens wheel 202; and they are also retarded on leaving engagement on the upward move to prevent gear 20511, orI 205i from racing. As a further preventive brakes 2in may also be applied to the shafts 20111l and 2021i of both counters, as shown in Figs. 9 and 10.

As previously stated the tens wheel is intermittently driven from the units wheelby means of the Geneva gear 2040, one step for each revolution of the units wheel to thereby effect a tens transfer. Therefore it will be obvious that this is the only time that the pawls 203C become -eiective in rotating the tens wheel or shell 202 and that only at this time will the action of the arm 20811 have any effect with regard to the control of position or rectification of the pawls 202e. The rectifying movement as caused by the operation of the arm 20Bt however, is effective on each cycle of operation.

To understand more clearly why there is a reversal of movement of the pawls 202C and 203e as effected by the cam portions of the arms 208i and 20811, the combined action of the two arms will be described.

Assuming that the units wheel has just completed its movement through the ten position and that the transfer was made through the Geneva drive gear .20411, both arms 208i and 20811 will have moved simultaneously to the initial stopping positions shown in Figs. 15 and 19. From these positions the arm 208i will move downward to a position which will cause the pawls 202e to be retracted to their dot and dash line position, Fig. l2, while the arm 20811. will move downward to a position which will cause the pawls 203e to advance and thereby advance the tens wheel 202 slightly.` The pawls 202C which had been rocking freely about xed axes while the ratchet teeth moved thereover duringthe drive of the tens wheel 202 by the pawls 203e', will thus be spaced ay suilicient distance away from the ratchet teeth, with which they should next engage, to thereby prevent the said pawls 202e from Cil resting upon the top of said ratchet teeth or being in a position to engage the wrong ratchet teeth through the pawls 262e. in other wordsthe possibility of this error is rectied.

The opposite or advance movement which is given to the pawls w3c by means of the cam pcrlocks out, it is necessary to rock all oi the Geneva gears clear of the numeral wheels. When the register locks out at the time the unitsv Geneva gear V20411 has just completed a transfer to the tens wheel, its. wide tooth must be fully clear of the tooth space on the unit wheel, otherwise the Genevag'ears cannot be rocked out for resetting.,

v Upon movement of the arms 2B8t and 29811, from the latter position which is the home position, as

.in Figs. 16 and 20, the rectifying action is oon- 'tinued still further before the commencement of another registering operation. During 4this further movement to the positions of Figs. 1'? and 21,

thegpawls 292e and 203e are caused to move in the opposite directions and opposite to the directions just described, that is, the pawls Zowill .be advanced to engage with the ratchet teeth 2021i, while theipawls'f203c will be backed away from the ratchet teeth. 'I'his motion wouldl not' effect any rectication under the present conditions, vbut if the operation of the number wheels had been controlled from the tens drive, the ad- Y vance movement of the pawls 202e would cause the shell 202 to be driven, to advance the ratchet teeth 202t with respect to the pawls 283e and thereby prevent the said pawls from resting upon the top of the ratchet teeth.-

Upon the reverse or upward movement of the arms 208i and 2ll8u, the gears 205t and 2051i will again assume the positions shown in Figs. 18 and l22 respectively.

' The above described movements of the arms 208t and 2|l8uA not only ensures the meshing of the gear segments and gears, but also brings the registerwheels back into necessary alignment to enable the locking devices (when the postage amountis exhausted) to operate, for correct setting up of the wheels in the post oilice and for correct readingof the gures, and what is also of importance, the retracting, or moving back, of the pawls inside the tens wheel. Y

In actual use of these machines the operator turns'the crank handle quickly and the number wheels and their driving gears whirl very rapidly, necessitating the mechanical safeguards incorporated in the mechanism.

As the units wheels only operates the tens wheel when it is transferring its full count of 10 to said tens wheel, therefore there are only two positions when the supplementary motion from the units wheel cam lever 20811. can be transmitted to the gear v2|l3.- One is when the units wheel vhas stopped so that the two` half teeth on its rim are just about to engage a tooth of the related Geneva gear, the other is when the units wheel has stopped so -that the two half teeth have just left a tooth of said Geneva gear, but are still practically in contact with it. While the transfer is actually being made the cam lever arms 208i and 28u are aiaases clear of the pins it and 295e. The driven tens wheel must then be advanced far' enough to ensure the dropping in of the tens pawl 262e, and this action must be independent of and supplementary advanced and retracted, one motion being the reverse of the other. The advance and retraction of the units drive naturally affects the relative positions of the ratchet teeth and the actuating pawl ic at the positions mentioned above. At all other times the effect is interrupted because the relatedGeneva is at rest onthe rim of the units wheel. This double action is desirable in this type of mechanism for the necessary alignment of the number wheels for locmng, setting and reading. Although in this instance the supplementary motion is imparted to the pawls themselves, obviously the sameeiect might be obtained by the advancement of the tens number wheel itself by another entirely separatemeans. In the present invention the desired effect is more simply obtained by utilizing the normal gear drives (two in this case) for imparting the motion.

It is obvious that the ratchet drive can be applied to other wheels in the register if desired, in case higher values than those registered by operating the tens wheel were t0 be Printed and registered at one operation of the machine. In theforegoing descriptionwe have assumed that one unit was the lowest value to beregistered.

In some cases fractional values (less than one) may be registered. For instance, if the machine is a one cent unit machine. the units wheel will move one space when the selector dial is set at 1; if it is a half cent unit.' the units Wheel will be moved two spaces. Assuming that it is a one cent unit: if the selector, dial is set at-a ligure below lo only the units wheel will register. If theV dial is set at 10 or a multiple thereof the tens wheel registers and transfers to the higher wheels. theunitswheelnotturning. Ifthedialissetat a gure higher than ten, but not a multiple thereof, such as il, 12, 15, 22', the drive is through the units wheel as its pinion 2011i is the o ne driven by one of the segmental gears. We/have in the description referred to units wheel and "tens wheel. We mean thereby to include any two wheels of diierent denominations in the register which it may be desired to operate in the manner Operation e The operation of the machine and several parts described.

" thereof embodying the present invention is hereinbefore clrly set forth. In brief, when a stamp `of lless value than ten is to be printed the --rod 23 is pushed inward .and then turned until the proper printing stamp on wheel lla is brought to operative position, and this movement of the rod described, a-nd the units wheel is shifted a number of digits corresponding to the value of stamp. The tens wheel however will not then be driven except in event of a carry over from the units wheel to the tens wheel.

If a stamp of the value of ten or more is to be printed the rod 23 is pushed inward and turned to adjust the wheel I 1a to bring the proper denomination printing surface to operative position; and simultaneously carrier 32a is shifted to bring the proper gear segment 32 into position to mesh with the tens pinion 20H; then the rod 23 is released and crank 2i turned one revolution, during which revolution the stamp is printed on the envelope and the tens wheel is actuated the proper extent to register the value of the stamp printed; and during such operation the units wheel remains unaffected.

The construction described enables the machine to be readily set in a very simple manner to print any desired value that may be engraved on the value printing wheel I'la; and said wheel can be adjusted to proper position to print the value desired by simply turningthe rod 23 by means of knob 23a. and such turning of the rod automatically varies the position of the register operating gear segments so that the register will be actuated either through the units wheel or the tens wheel in accordance with the denomination or value of the stamp printed.

By employing one set of gear segments and means whereby the segments can be caused to operate either the units wheel or the tens wheel of the register, the machine is greatly simplied, the number of operative parts which would be ordinarily required greatly lessened, and excessive wear on the units wheel (which ordinarily would be caused by having to transmit all denominations to be registered through such wheel) is obviated, and the durability and accuracy o! the register enhanced.

We claim:-

l. In a device of the character specied including a register wheel of lower order and a register wheel of higher order, alternately operable driving mechanisms for actuating the register wheel of higher order, said driving mechanisms consisting of ratchet pawls, and supplementary driving means functioning once for each cycle of operation to assure the engagement of both drives for the ensuing registration during the next cycle of operation.

2. In combination with a register, a drive for actuating the units wheel thereof, a drive for operating the tens wheel thereof, and means for slightly advancing each drive after its normal operation, to insure eil'ective operation oi' the other drive.

3. In mechanism as set forth in claim 2, means for slightly retracting each of these drives after its advancement. l

4. In a register having numeral wheels and carry over devices; selectively operable drives for independently operating the units wh'eel or the 5. A register all the wheel of which are straight y Geneva operated except the tens wheel and wherein the Geneva drive is maintained in constant operative relation with the said wheels, two alternately operated ratchet driving mechanisms in operative engagement with the tens wheel, one ratchet drive being Geneva operated from the units wheel, and the other ratchet drive being separately operated by an individual drive, and means for slightly advancing each of these drives after its normal operation to insure effective operation of the other means.

6. A register all the wheels of which are straight Geneva operated except 'the tens y wheel and wherein the Geneva drive is maintained in constant operative relation with the said wheels, two alternately operated ratchet driving mechanisms in operative engagement with the tens wheel, one

ratchet drive being Geneva operated from the units wheel, and the other ratchet drive being separately operated by an individual drive, and means for slightly advancing and then retracting each drive after its normal operation to insure effective operation of the other drive.

7. In a register of the character described having a tens wheel and means whereby said tens wheel can be operated by the units wheel or by a separatev drive, means operable between each cycle of registration for advancing each oi.' these drives beyond their ordinarily actuated position.

8. In a register o! the character described having a tens wheel, and means whereby said tens wheel can be operated by the units wheel or by a separate drive; means operable between each cycle of registration for advancing each of these drives beyond their ordinarily actuated position and a means for retracting them when advanced beyond such position.

9. In combination with a register, a drive for actuating the register, means for slightly advancing and then retracting the drive after its normal operation to insure eiiective subsequent opera tion.

10. In combination with a register, a drive for vactuating a wheel of lower denomination, a drive means for slightly advancing and then retracting n each driveaiter its normal operation to insure eiective operation of the other drive.

WALTER H. WHEELER, JR. JACOB W. OGDEN. 

